How To Fix WS594 - Negative weights are not allowed. Check input data

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 594

• Message text: Negative weights are not allowed. Check input data

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS594 - Negative weights are not allowed. Check input data ?

  The SAP error message WS594: "Negative weights are not allowed. Check input data" typically occurs in the context of SAP Warehouse Management (WM) or Inventory Management (IM) processes where weight data is involved, such as during goods movements, transfer postings, or physical inventory.
  
  Cause
  
  The system has detected a negative value in the weight field where only positive weights are allowed.
  This usually happens when:
  
  The input data for weight (e.g., gross weight, net weight) is incorrectly entered as a negative number.
  There is an error in the master data (material master or packaging specifications) where weight values are maintained.
  During a goods movement or transfer posting, the weight calculation results in a negative value due to incorrect quantity or unit of measure conversions.
  Custom enhancements or user exits incorrectly manipulate weight data.
  
  
  
  
  Solution
  
  
  Check Input Data:
  
  Verify the weight values entered during the transaction.
  Ensure that no negative values are manually entered in the weight fields.
  
  
  
  Review Material Master Data:
  
  Go to transaction MM03 (Display Material) and check the Basic Data and Packaging views for weight fields.
  Correct any negative or zero values that should be positive.
  
  
  
  Check Packaging Specifications:
  
  Packaging materials or handling units may have weight data that influences the total weight.
  Use transaction HU02 or related packaging transactions to verify weights.
  
  
  
  Review Transaction Data:
  
  If the error occurs during a goods movement (e.g., MIGO), check the quantities and units of measure.
  Ensure that the quantity and weight calculations are consistent.
  
  
  
  Debug or Check Custom Code:
  
  If custom enhancements or user exits are used to manipulate weight data, review the logic to prevent negative weights.
  
  
  
  Reprocess the Transaction:
  
  After correcting the data, re-execute the transaction.
  
  
  
  
  Related Information
  
  SAP Modules: Warehouse Management (WM), Inventory Management (IM), Logistics Execution (LE)
  Common Transactions:
  
  MIGO – Goods Movement
  LT01 / LT10 – Transfer Order Creation
  MI01 / MI04 – Physical Inventory Document
  
  
  SAP Notes: Check for any SAP Notes related to WS594 or weight validation errors.
  Weight Fields in SAP:
  
  Gross Weight (BRGEW)
  Net Weight (NTGEW)
  Tare Weight (TAREW)
  
  
  Unit of Measure Consistency: Ensure that the unit of measure for weight is consistent and correctly maintained.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WS594: Negative weights are not allowed. Check input data
  
  
  Cause
  Negative weight value entered or calculated in weight fields where only positive allowed
  
  
  Solution
  Verify and correct weight data in input, material master, packaging specs, and transactions
  
  
  Related Areas
  WM, IM, LE modules; transactions MIGO, LT01, MI01; weight fields BRGEW, NTGEW, TAREW
  
  
  
  
  If you continue to face issues after checking the above, consider enabling debugging or contacting SAP support with detailed transaction logs and screenshots.